Coulda, woulda, shoulda - S4-E11
Continuity mistake: Carrie is sitting at her laptop eating a blue ice pop. She takes a bite from the top then holds the stick with the rest of the ice pop in between her teeth while she types on the laptop, we see a shot of the screen. When we go back to Carrie she is eating the rest of the ice pop which is impossible because just 2 seconds before it was still attached to the stick. She didn't have time to bite it off the stick because she was using both her hands to type.
Coulda, woulda, shoulda - S4-E11
Continuity mistake: Lucy Liu takes the cup to her mouth but in the angle shot from the side it disappears.
Coulda, woulda, shoulda - S4-E11
Continuity mistake: While having breakfast, Charlotte says "what's not about me" and red berries suddenly appear on Sam's fork.
Answer: Yes, it is.